Tepco: “Significant density” of Alpha radiation leaking from Unit 3 at Fukushima — Steam seen at reactor building “likely to be leaked” from containment vessel

Published: August 14th, 2013 at 3:14 pm ET


Title: Sampling Results (All α) of Condensed Water at Unit 1-3 PCV Gas Control System (the Entrance of HEPA Filter) in Fukushima Daiichi Nuclear Power Station
Source: Tepco
Date: August 12, 2013
h/t SimplyInfo

Sampling of dust and drain of air bleed gas obtained at Unit 1-3 PCV gas control system was performed in April and May in order to understand the current radioactive density of PCV gas. […]

Monitoring of radioactive release amount at the Reactor Building […]

Analysis Result of All α [alpha] Radioactivity Density at Unit 1-3 […]

“Significant density of α [alpha] nuclide was found at Unit 3”

Isotopes that emit alpha particles include: Americium-241, Plutonium-239 and Uranium-238.

From July 26, 2013: [Steam observed at Unit 3]  is likely to be leaked from the head of the PCV, etc. It is estimated that this water vapor […] was emitted to the upper part of the fifth floor of the Reactor Building via the gap of the shield plug, and it was observed as the steam

Published: August 14th, 2013 at 3:14 pm ET


Related Posts

  1. Tepco: Steam may be from gas leaking out of containment vessel at Fukushima Reactor No. 3 July 26, 2013
  2. Officials now say Fukushima reactor with MOX fuel “leaked directly from containment” — TV: Contamination of environment was due to “failure of vessel” — Experts: This has caused additional worries because MOX is more “radioactively aggressive” due to plutonium content (VIDEO) December 18, 2015
  3. New pics of Reactor No. 3 show crane has collapsed onto leaking containment vessel (VIDEO) October 20, 2011
  4. Reactor No. 3: Containment vessel not holding air pressure — Gas may be leaking from damaged part of container, says TEPCO (VIDEO) July 16, 2011
  5. Asahi: Tepco can’t find where huge amount of highly radioactive water is leaking at Reactor No. 2 — ‘Fractures’ in containment vessel suspected December 12, 2012

50 comments to Tepco: “Significant density” of Alpha radiation leaking from Unit 3 at Fukushima — Steam seen at reactor building “likely to be leaked” from containment vessel

  • PhilipUpNorth PhilipUpNorth

    "Isotopes that emit alpha particles include: Americium-241, Plutonium-239 and Uranium-238."
    TEPCO admits releases possibly including Plutonium from Reactor3. But insists The obviously radioactive steam from Reactor 3 isn't radioactive.
    Way to tell the truth, TEPCO. Sgt. Schultz, of Hogan's Heros used to say: "I know nothing. I see nothing! Nothing!" 😉

    • The steam is NOT radioactive, because it is just Alpha dogs being released… and they are NOT radioactive..

      Maybe we call them Americium, Plutonium, and uranium.

      No harm in that, is there?

      Then there is always the rain = steam story to fall back on…

      • hbjon hbjon

        Don't mislead people by minimizing the danger of alpha. Is Uranium radioactive? Of course it is. It decays with an alpha particle. Alpha radiation is the most dangerous type. Even more dangerous than gamma when it is ingested. An alpha particle is very massive and when it strikes an object it does damage. Because it is so massive and carries a charge it has a limited ability to penetrate solid material. Uranium is better left locked within the matrix of its ore. But no. Man wants to free it from the confines of uranium ore and try to heat water with it.

    • Gasser Gasser

      I've got your Americium under my skin.

I've got your Cesium deep in the heart of me.
So deep in my heart that you're really a part of me.

I've got your Plutonium in my lung skin.
I'd tried not breathing so you would not get in.

I said to myself: this Nuclear affair never will go so well.

      But why should I try to resist when, NRC, knows so well

I've got your Tritium under my skin

      I've sacrifice everything come what might

      For the sake of havin' your electricity near

      In spite of warnin' voices that comes in the night
And repeats, repeats in my ear:
Don't you know, little fool, you never can win
      Use your mentality, wake up to reality.

But each time that I do just the thought of Kilowatts
Makes me stop before I begin
      Cause I've got your convenience under my skin.

      I have sacrifice anything come what might

      For the sake of havin' your wattage near

In spite of the warning voices that comes in the night
And repeats – how it yells in my ear:
Don't you know, little fool, you never can win

Why not use your mentality – step up, wake up to reality
      But each time I do there's no stopping you

Zaps all my energy just before I begin
      Cause I've got your Strontium under my skin.

      Yes, I've got your Uranium under my skin.

      • We Not They Finally

        Oh, my God! Take this one on the road! It's like an Irish wake, where they sing to keep from weeping.

  • zak red ridge

    Reactor containment? I haven't seen anything left of number 3 reactor. It's gone with the explosion. The steam is coming from remnants of the core that went down as opposed to the rest that went skywards .there was some talk of reactor 3 holding stocks of covert weapons material, but nothing recently.I think they will have to call up on the Fukushima 5000, to boldly go where no one or no thing has managed so far. Suicide missions to locate the cores and to deal with them ?? The Russians at least did what they had to do! The West is the Best doesn't quite ring so true now. During Chernobyl all talk was of 'how it couldn't happen here' how western engineering and our containment would prevent any accident of any significance' The West don't seem that good no- more. Keep the Faith!

    • nedlifromvermont

      Actually, as I posted a few threads back, the NRC was informed by an industry insider-turned-whistle blower, who uncovered some data that was gathered and hushed up at the time, that showed that the containment at TMI was actually breached. This was never admitted to, (NRC guy, who was trained to lie, straight-faced, told the whistle blower, "We missed it." (!!!) because Wash 740 and Rasmussen update (the NRC and AEC bibles on reactor safety studies (RSS) both expressed the mistaken idea that containment failure was so unlikely as to be basically not credible, to allow reactor sales to continue.

      And these are the bogus studies (Americal Physical Society said they were bogus at the time, in 1975,) on which our federal idiotic government bases its right to reserve to itself the issue of reactor safety!!

      the whole ridiculous story coming out is really too pathetic and ridiculous to even believe, except it is a true story!!!

      And judges rules for them (Gar Murtha of Vermont) like saying Nuclear Reactors are so safe that No One Is Allowed To Talk about Reactor Safety!!!

      Hitler would be proud of these fellows. Goebbels would smile affectionately for the bold hubris of lying wholesale.

      Himmler was a chicken farmer, as far as we know, he was getting stoned on chicken shit.

      Goering, upper class Nazi leader, he just liked being fat around new airplanes. He would have been a good candidate for Commissioner at the NRC.

      having fun are we

      • HoTaters HoTaters

        Some bird brain, Himmler. Maybe he had Toxoplasmosis. There is likely a reason for the term "bird brained" being used as a slang term — aside from indicating one apparently possesses low intelligence.

        Many slang terms have a basis in historical events, although their meaning changes over time, and in common use.

        Am becoming more & more convinced much mental illness is caused by hidden infectious disease pathogens ….


        Toxoplasmosis Affects: Humans

        Toxoplasmosis may be one of the most widespread zoonotic diseases in the United States. It is common in humans. It is a parasitic infection caused by an intracellular protozoa Toxoplasma godii antibody.
        Toxopasmosis is extremely common in humans, but most infections are not apparent…. The organism seems to have infinity for brain tissue. The disease may cause many problems, including mental retardation and death….
        …problems may include inflammation of the retina, strabismus (deviation of the eyes, which the patient cannot overcome), and blindness, hydrocephalous (accumulation of fluid in the brain cavity), abnormal smallness of the head, cerebral calcifications, mental retardation, epilepsy and deafness. The acquired (non-congenital) form may affect the central nervous system and exhibit symptoms ranging from headaches, slight fever, drowsiness, disorientation and fatigue to encephalitis and fatal pneumonia.

        • HoTaters HoTaters

          Nedli, you have historical facts in place to support your arguments. The Nazi analogies are appreciated here. Many of Mum's relatives were "disappeared" by so-called "patriotic Germans" for resisting the Nazis. Most of the "disappeared" were German ex-pat's & as far as we know not Jewish or of Eastern European descent (Some were Eastern Europeans, & some were possibly Jewish who wished to avoid pogroms by adopting "Christianity.")

          At least one of my family members (Dad's side, ironically) was former AEC who left because of what went on there. As a child, I overheard an adult conversation wherein my father and uncle were discussing why he had moved on to, of all places (I think) Hanford. Or perhaps that was his brother. They were both nuclear professionals. One of them was with the AEC, according to what I'd heard.

          As we know, life at Hanford has been no picnic. My poor cousin, out of the frying pan, into the fire, quite literally. So far he has remained healthy to the best of our knowledge. I often wonder what it took for him to suck it up & endure after getting involved in such a horrible profession. And about his mental status.

          He started a sideline business years ago that has been amazingly successful, & he won his freedom.

          If it's ever safe to tell the truth (for both of us), I'll ask him what happened & will tell his story. Too young when I heard the story to know if I really heard what I thought I overheard. Something like what you told us…

  • obewanspeaks obewanspeaks


  • Proton

    Finally some long awaited ALPHA data… too bad it's not the data from the immediate aftermath of the earthquake and tsunami. When will that be released?

  • Downwinders – John Wayne And 50% Of his Film Crew Got Cancer – We Are ALL Downwinders; via @AGreenRoad

    • HoTaters HoTaters

      Thanks, Doc. Knowing the truth about what REALLY happened to John Wayne is liberating. For decades we were all told he died of lung cancer because he was a cigarette smoker. More likely Plutonium or some other inhaled radioactive particle killed him.

      I'm disgusted, as usual. He was one of my childhood heroes, a real man's man. I liked him a great deal, and it was sad seeing his reputation demeaned, and seeing his integrity discredited.

      Some of the people in the know about what really happened to him and his crew must have really had a bad hankerin' to make the cowboy look bad. Much easier to make Big John look bad than to let the peasants in the nuclear village know the truth ….

      Yes, we're all downwinders now.

      • HoTaters HoTaters

        Funny, something never rang true when I heard John Wayne died of cancer from smoking. It just didn't fit with reality.

        I wonder if Yul Brenner and others of his generation who died mysteriously from cancers were exposed to high amounts of lethal "low dose" radiation.

        Low dose, me arsky. Reality, and radiation, bites.

        • HoTaters HoTaters

          Now I think I'm going to have to review my entire life and ALL the STORIES the media has put out. And do gut check on every single story where what we were told didn't fit with what the gut was telling me ….

          How many lies did I buy into by believing the monsters who foisted all this off on us?

          Damn, I was born near South Chicago, and lived less than two miles from the Chicago Piles for the first 4 1/2 years of my life. Little wonder my immune system is trashed. It now all makes perfect sense.

          So if any of y'all wonder why the mystery "autoimmune" and immune disorders are killing and disabling so many people, you might not have to look much farther than the nuclear horizon …. Nukes, GMO's, pesticides, herbicides, petrochemical nightmares and environmental toxins of all kinds. Little wonder so many people are so sick, or dying.

          If you wonder why so many people now have chronic Lyme disease (unheard of 30 years ago, and now found almost everywhere on earth), or fibromyalgia, think nuclear incapacitation, or "soft kill" as it's called. We're not only all downwinders, we're potential "soft kill" victims.

  • TheBigPicture TheBigPicture

    Daiichi spewing Plutonium, we should get daily measurements for this.

  • Darn it, where is that handy dandy plutonium detector in this toolbox.. got to be here somewhere…

    screwdriver ?

    hammer ?

    nails ?

    Probably the neighbor borrowed it… he never brings stuff back..

    Have to go to the hardware store and get another one right quick…

  • gmathol

    Japan and its scientific elite needs a reality check! What are they waiting for?

    • They cannot admit this.. it is the WORST of the worst…

      They will probably have to be dragged kicking and screaming all of the way, and even under torture, they will not admit that plutonium was even at Fukushima.. much less that somewhere between 600-6000 pounds of it was released as dust or fuel fragments.

  • Sure is a lot of nano dust flying around these days… does it glow in the dark with dark lights?

    Dr. Holger Strohm – Plutonium From Fukushima Will Kill Millions – Via Recycling Through Many Future Generations; via @AGreenRoad

  • weeman

    Can anyone put that in layman terms the amount of release, how can they deny recriticality, they can't.
    What was the readings right after accident, must have been sky high.
    We demand this data or we are going to boycott Japanese cars and product, call it blackmail I call it survival, we must act as one and we will get the answer, they only understand money.

  • UncleCrusty

    "…Signifigant density" was found in the skulls of TEPCO Management.
    Finally a teaser of alpha radiation data. Sadly the tease is what we knew all along. Worst case scenario, with a few nasty twists.

  • They are releasing Alpha the top dog… he will solve this problem along with Beta, the caped crusader assistant dog. Beta follows Alpha all over the place.

    Of course, Alpha has a girlfriend, who does not know his REAL ID, due to him hiding behind a sheet of paper all of the time.

    She is called Gamma girl.. some people call her a B(##ch.

    Together this trio of crusaders will ride into towns all over the world, providing free radiation presents to all citizens…

    • obewanspeaks obewanspeaks

      Love Free Stuff!

      Must be like the "Free Obamaphones" they are now handing out all over the place!

      Problem is, all these free phones are glowing and probably the reason why they were/are so cheap (free) and they are all came from Japan..

      Great to have so many friends looking out for everybody.

      Chuckle 🙂

  • Jebus Jebus

    The Truth always wins in The End…

    Alpha decay is why the plutonium factor is so deadly.

    Alpha particle

    When alpha particle emitting isotopes are ingested, they are far more dangerous than their half-life or decay rate would suggest, due to the high relative biological effectiveness of alpha radiation to cause biological damage, after alpha-emitting radioisotopes enter living cells. Ingested alpha emitter radioisotopes (such as transuranics or actinides) are an average of about 20 times more dangerous, and in some experiments up to 1000 times more dangerous, than an equivalent activity of beta emitting or gamma emitting radioisotopes.


    And here is another reminder of when the facts were released.


    Admitting the truth two, and a half years later, is a very poor plutonium contaminatiom mitigation practice…

    A death sentence for all who win(?) that lottery…

  • mark_eric

    Dr. Goodheart keyboard-danced these words:
    They will probably have to be dragged kicking and screaming all of the way, and even under torture, they will not admit that plutonium was even at Fukushima.. much less that somewhere between 600-6000 pounds of it was released as dust or fuel fragments.
    I've been telling people that several hundred TONS of Plutonium were blown into the atmosphere by #3. Your post indicates 600-6000 pounds. Is that the amount estimated to be in the MOX/spent fuel? Is the several hundred tons amount the combined mass of all radioisotopes in the fuel rods/etc? Or did I have a memory malfunction?

    Is there an estimate for the total amount of Plutonium that would have been on site 3/11, and how much might be left? I know the second part of the question might not be possible to answer with any confidence.

    Thanks. I hate to be putting bad info out there as I know it hurts all of our credibility.


    • Jebus Jebus

      How much plutonium was released is a moot point, when a couple of pounds of plutonium distributed evenly across the earth, is enough to end all life…

    • Sickputer

      Mark…we discussed the plutonium tonnage last year: See my posts starting at 10:23 PM August 21, 2012:


      Probably not hundreds of tons of plutonium at Fukushambles, but several tons.

      My statistics on Sellafield were challenged by a follow-up reader and I changed my Sellafield estimate by 90% downward because most of it was plutonium laced effluent and not pure plutonium.

      All the best,


    • nedlifromvermont

      I had the same problem at a society wedding in Newport, RI last weekend … I was telling my old friend (who was finally becoming receptive to hearing about this tragedy, he has been tutt-tutting it since 3/11) and I said 600 tons of plutonium were released, and he questioned that figure, then I said perhaps I meant to say 600 pounds, from AGR's posts, and that is scary enough, and so go with that number, and multiply 600 pounds times 16 oz/lb and then this product again multiply by 28 grams/oz. and then divide this number by 1/50 million and you are well into the many billions of potential lethal doses …

      … so we don't need to exaggerate … a conservative estimate is plenty bad enough …

      How does Big Nuke get past this bad publicity?

      Deny, defend, lie, cheat, cover up and pay those in power to let you keep your heinous toys???

      okay. Roger. Got it.

  • razzz razzz

    I don't understand their drawing. The results are from captured samples just before they enter the filtration system (maybe forced by nitrogen purges) but they have some arrows showing flow out of containment to outside air. The notes say they monitor the outside air in the remains of the building but I don't see the results of the monitoring.

    How much fallout is captured in the filtration system and how much fallout is free to flow to outside air like the steam at Unit 3?

  • obewanspeaks obewanspeaks

    Its a secret..

    • It is also a secret what was in #3 reactor and spent fuel pool.. There are MANY secrets at FUKU Daichi, such as what went on there as far as nuclear weapons research, breeding plutonium for weapons, etc…

      Why are things like this important to know?

      Because if #3 was a breeder reactor with a solid ring of plutonium rods around the outside, then the amount of plutonium both in the SFP and in the reactor is much more than the 600 pounds that it would have had with just MOX fuel inside of it.

      Having a breeder reactor at FUKU, if that is what they were doing with #3, (and why it blew up differently than the others) would also explain why they are refusing to even admit ANY plutonium was there, at all.

      What are they trying to hide? Why not let some investigative journalists in there and talk to some of the workers, if everything is so ok, so safe, so normal?

      Oh yea, we forgot, they swore all workers to secrecy FOREVER. Now why do that if there is nothing to hide?

  • Cerviche

    I remembered as a kid there was a movie I saw that made me very aware and afraid of this sort of nightmare….. movie to reality, end cause different, result similar, anyone remembers a movie by the name of "On the Beach"? its a 1959 film, since we are all on the topic of how screwed the world is how about a movie to go along with the theme :D.

    • brainheart

      My spouse and I just watched the 1959 movie a few days ago. We found it here:



      I had not seen it since I was about 8 years old. We watched it as a family when I was young. I actually remembered what was causing the phantom signals being received over the telegraph wires. I enjoyed watching it again.

      Avoiding discussion of the pending doom was the coping mechanism. There were no attempts to document for future intelligent earth dwellers or visitors. And, there was definitely no thought of trying to survive the oncoming radiation plumes. Interesting….

      • Cerviche

        It was a scary real movie showing life during/after the man made apocalypse , i can understand why the original writer didnt consider leaving anything behind to warn or document the happenings or means of trying to survive the radiation plumes, as you probably know nuclear materials from fallout lasts from hours to one being 700 million years, it would be like us observing other uninhabitable planets like Jupiter or Mercury and so on….. no point lol, anything smart to want to visit other planets would understand what happened to us

    • We Not They Finally

      We remember it WELL. And re-runs still come up on AMC and TMC. That and "Fail Safe" were two of the best films ever made.

  • Cerviche

    Whoops theres the 2000 movie xD http://www.imdb.com/title/tt0219224/

  • mteafws

    I keep telling myself it's gonna be ok, and then, 'whack!' a big cold hand slaps my face and I wake up. I wish more people would wake up. None of my friends or relatives are even considering this issue as something serious. They all give me pretty much the same response "it's not in the news, never heard of this, you're being silly, just relax, you're being dumb".

  • Cerviche

    That my friend is the part that bugs me the most, the people that i am around and spend time talking too, when i ask them if they are for or against the idea of nuclear energy the majority if not all were like no Fs given and they dont care, i need to find me some new friends =/, i follow international affairs more than local affairs because of things like this have a more dire effect on my well being than local affairs seem to most times. A lot of people dont understand the implications to nuclear power, i made a fb page hoping i can educate a few people about the problems associated with nuclear power, a hand full followed but im not sure to what end….. nothing created with destruction in mind should be utilized for any purpose what so ever… the people to be tried and executed for this madness have long left us and instead of learning from their mistakes we capitalize on the capital to be made by using something for which unleashed there is no cure other than death. Monitoring the situation is the best we can do… thats to tell you the extent of the matter, the Mayans were off by a year or few it seems

  • Cerviche

    I very well understand how all of this started and most sides of things but you have to go back to

    1. Who was the genius that thought up the idea to build a couple Nuclear Reactors in a geologically unstable region, in an earthquake/tsunami prone area, on the east coast, on top of a naturally occurring aquifer

    2. Why the hell have this not been followed with day or week by week media coverage world wide?

    3. What system is in place to contain not just the situation from the point of origin but the consumption of general consumer products from that region affected?

    4. In the possible worsening situation and the high possibility of the situation definitely heading for the worse how are you going to prepare the masses for the situation that has been going on for almost 3 years? by then contaminants of all sorts would have reached the global population…..

    To this end im tired of informing people about it, if i had the money i would have invested in a few hazardous materiel suites and a gun.

  • SusanS

    ☢ Fukushima Petitions to Sign & Share! ☢


    ☢ Japan Needs Worldwide Help NOW! ☢
    We need a worldwide consortium made up of experts in the field to start brainstorming solutions to what is happening in Fukushima and what can be done to FIX it. We need them NOW. Each country will also need to commit funds to this effort, since it is and will continue to affect the entire planet. The consequences could be the extinction of all life on earth. It is past time to do this. Japan is calling for help and they can not handle it alone.

    ☢ ☢ ☢ ☢ ☢ ☢ ☢ ☢ ☢ ☢ ☢ ☢ ☢